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Probability of obtaining a blackjack from the first two cards is P = 32/663 = 4.82654% in the case of a 1-deck game and P = 64/1339= 4.77968% in the case of a 2-deck game. Similarly, we can calculate the following probabilities. In the first table you can see your odds according to dealer up card. The second table demonstrates the dealer probability of having a different outcome depending on the first card. You may also try our other blackjack tools created for counting odds, generating strategies and training players. Blackjack Dealer Outcome Probabilities The dealer outcome probability charts on this page can be helpful in determining which of two tournament strategies is preferable. The values in these charts were calculated using a combinatorial analysis from a full deck after removing only the dealer’s upcard.
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Blackjack Probability and Blackjack Odds
To fully understand the game of blackjack, you must understand and master blackjack odds. It's crucial to know how the casino gains its edge and how it helps them win. It's also important to understand blackjack odds such as the odds of hitting a 10 or the odds of being dealt a blackjack. You can read over these blackjack odds charts to help understand the logistics behind blackjack.
Casino and Dealer Advantage in Blackjack
Looking at the blackjack chart, the blackjack strategy card tells us to stand whenever you have 17 points or more in your hand, regardless of what the dealer is showing for an up card. Reduce the value of your hand by one point to 16, and the chart says to stand when the dealer’s up card is a 6 or lower. Over time playing blackjack with correct basic strategy will reduce the house edge the casino has over the player. Every wrong play is an edge for the casino. Learning the skill of basic strategy will allow players to enjoy more time at the table and increase the possibility of hitting a hot streak and walking away from the table as a winner.
In most casino games of blackjack, the house advantage (the dealer advantage) is ~ 8%. The house gets this advantage by the dealer being the last player to act. By acting last, all other players have already made their decisions and could quite possibly bust before the dealer has his turn.
By using correct blackjack basic strategy, you can turn the casino edge in blackjack from 7%-8% down to 0.5%. If you correctly use advanced card counting techniques, you can often change blackjack odds and give yourself the advantage over the casino. Manipulating the house odds to your favor is the reason most casinos don't allow card counters to play blackjack.
Probability of Busting on a Hit
It's very important to know the probability of your hand busting when you are holding any total in the game of blackjack. The following odds chart shows the blackjack odds of busting, depending on your current hand value:
Hand Value | % Bust If You Hit |
---|---|
21 | 100% |
20 | 92% |
19 | 85% |
18 | 77% |
17 | 69% |
16 | 62% |
15 | 58% |
14 | 56% |
13 | 39% |
12 | 31% |
11 or Less | 0% |
Two-Card Count Frequencies
This interesting blackjack odds chart is the two card count frequency chart. This chart shows the percentage chance that you will be dealt a hand in each given value range. The most important frequencey to note is the chance of being dealt a natural blackjack (natural 21 value. The odds of being dealt a natural blackjack are merely 4.8%. Following this chart you will see that the most common two card hand, at 38.7%, is a hand totaling 1-16, which is considered a decision hand.
Two Card Count | % Frequency |
---|---|
Natural 21 | 4.8% |
Hard Standing (17-20) | 30.0 % |
Decision Hands (1-16) | 38.7% |
No Bust | 26.5% |
TOTAL | 100.0% |
Dealer Final Hand Probabilities
This blackjack odds chart shows the dealer final hand probability. These are the percentages that the dealer will end up with a hand totaling each corresponding value (up to 16). Read over this chart to understand the odds that the dealer has to make his final hand.
Dealer Final Hand Value | % | Cumulative % Total |
---|---|---|
Natural 21 | 4.82% | 4.83% |
21 (3 or More Cards) | 7.36% | 12.19% |
20 | 17.58% | 29.77% |
19 | 13.48% | 43.25% |
18 | 13.81% | 57.06% |
17 | 14.58% | 71.64% |
16 | 28.36% | 100.00% |
Player Advantage vs. Dealer Up Card
Blackjack Odds Chart
The first two columns in this odds chart explain the dealer's chance of busting, depending on the up card that he is showing. Cash coaster slot. You should note that the dealer has the highest chance of busting when he is showing a 5. The third column in this chart shows the player advantage of using basic strategy, compared to each up card the dealer is showing. You can see that the player has the highest advantage of 23.9%, when the dealer is showing a 5. When the dealer is showing any card that is 9 value or higher, the player is in the negative advantage range.
Dealer Up Card | Dealer Bust % | Player Advantage % with Basic Strategy |
---|---|---|
2 | 35.30% | 9.8% |
3 | 37.56% | 13.4% |
4 | 40.28% | 18.0% |
5 | 42.89% | 23.2% |
6 | 42.08% | 23.9% |
7 | 25.99% | 14.3% |
8 | 23.86% | 5.4% |
9 | 23.34% | -4.3% |
J,Q,K | 21.43% | -16.9% |
A | 11.65% | -16.0% |
Effects of Removing Cards from a Deck
When looking at the odds of removing certain cards from a 52-card deck, some cards have a much greater effect on blackjack odds. To create the strongest card counting system ever invented, you would have to incorporate all of these slight and subtle differences into the numbers to be a completely accurate system.
Removing every 5 from a deck cards would make the largest impact of improving your blackjack odds, as a player. On the other hand, removing every Ace from a deck of cards would make the largest impact on improving the odds for the casino.
Card | % Effect of Removal |
---|---|
2 | 0.40% |
3 | 0.43% |
4 | 0.52% |
5 | 0.67% |
6 | 0.45% |
7 | 0.30% |
8 | 0.01% |
9 | -0.15% |
10 | -0.51% |
A | -0.59% |
Blackjack Winning Odds
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